NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 223-345

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 223-345 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 223 blocks

Most active assignees, all time — NPA 223
ONVOY, LLC - PA 3
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 3
D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 2
FRACTEL, LLC 1
COMCAST IP PHONE, LLC 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2020-08-06 223-345-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CHAMBERSBG PA
2020-08-06 223-345-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CHAMBERSBG PA
2020-12-30 223-345-2XXX 2000–2999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 CHAMBERSBG PA
2021-01-30 223-345-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E CHAMBERSBG PA
2021-01-30 223-345-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E CHAMBERSBG PA
2021-01-30 223-345-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E CHAMBERSBG PA
2020-05-21 223-345-6XXX 6000–6999Assigned FRACTEL, LLC 965H CHAMBERSBG PA
2020-08-06 223-345-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CHAMBERSBG PA
2021-10-06 223-345-8XXX 8000–8999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 CHAMBERSBG PA
2021-06-07 223-345-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J CHAMBERSBG PA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.